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A colorless, nonvolatile solid, XeO3, explosive when dry: in solution it is called xenic acid.

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Radioactivity

The spontaneous disintegration of atomic nuclei.

Mass Action Expression

For a reversible reaction, aA + bB cC + dD the product of the concentrations of the products (species on the right), each raised to the power that corresponds to its coefficient in the balanced chemical equation, divided by the product of the concentrations of reactants (species on the left), each raised to the power that corresponds to its coefficient in the balanced chemical equation. At equilibrium the mass action expression is equal to K, at other times it is Q.[C]c[D]d [A]a[B]b = Q, or at equilibrium K.

Condensation

Liquefaction of vapor.

Metallurgy

Refers to the overall processes by which metals are extracted from ores.

Capillary

A tube having a very small inside diameter.

Electronic Transition

The transfer of an electron from one energy level to another.

Kinetic Energy

Energy that matter processes by virtue of its motion.

Oxidation Numbers

Arbitrary numbers that can be used as mechanical aids in writing formulas and balancing equations, for single- atom ions they correspond to the charge on the ion, more electronegative atoms are assigned negative oxidation numbers (also called Oxidation states).

Overlap

The interaction of orbitals on different atoms in the same region of space.